Event namespace should allow special chars like "+", "$", "/"

[millermedeiros]

It could be fixed by escaping the namespace string before doing the split().sort().join()

// chars that should be escaped in RegExp constructor
var rEscapeRegExpChars = /[\\.+*?\^$\[\](){}\/'#]/g;

function escapeRegExp(str) {
    return str.replace(rEscapeRegExpChars,'\\$&');
}

// than later on the place where namespaces RegExp is created
namespaces = namespaces ? new RegExp("(^|\\.)" + escapeRegExp(namespaces).split("\\.").sort().join("\\.(?:.*\\.)?") + "(\\.|$)") : null;
//

I was trying to create a namespace to handle keys combinations like "keypress.ctrl+s" but the "+" breaks unbind() and off() since namespaces.test( handleObj.namespace ) will return false.

My solution for now was simply to avoid using chars that have special meaning inside RegExp (using "keypress.ctrl_s" instead).

Couldn't find any information about it in the documentation and it took a while to realize the the event wasn't being removed and that the problem was caused by the plus sign.

[dmethvin]

I don't think it's necessary to accept any special characters, and doing so may limit our ability to expand syntax later. Use an underscore instead.

[millermedeiros]

ok, totally understand and main reason why I didn't even asked for a pull request.

already implemented it here:  https://github.com/tzuryby/jquery.hotkeys/pull/20

good thing that now it's documented somewhere (here in the bug tracker) and explains why it works this way.